# Secret Keeper — Encryption — Private messages & files

> Private messages & files (iPhone/iPad app by PAYMASTER TECHNOLOGIES ELEKTRONIK PAZARLAMA DIS TICARET LIMITED SIRKETI.)

- Source: https://appshunter.io/ios/app/secret-keeper-encryption/id6795122825 (this page in markdown: same URL + `.md`)
- Developer: [PAYMASTER TECHNOLOGIES ELEKTRONIK PAZARLAMA DIS TICARET LIMITED SIRKETI](https://appshunter.io/developer/1740760883)
- Category: Utilities, Productivity
- Price: Free
- Age rating: 17+
- Requires: iOS 15.0 · 36 MB
- Languages: American English
- Released: 2026-08-28
- Data updated: 2026-10-08
- User reviews in markdown: https://appshunter.io/ios/app/secret-keeper-encryption/id6795122825/reviews.md

## What is Secret Keeper?

Secret Keeper is a standalone end-to-end encryption tool. It turns any
communication channel into a secure one: encrypt a message or a file, send
the result over a regular messenger or e-mail, or show it as a QR code —
only the intended recipient can decrypt it.

NO SERVERS, NO ACCOUNTS
• The app is fully offline: no sign-up, no phone number, no e-mail.
• Keys are generated on your device and never leave it.
• We collect no data at all — there is simply nowhere to send it.

CRYPTOGRAPHY
• Modern standard algorithms: X25519 + AES-GCM.
• Your identity is a 12-word seed phrase: it restores your profile on a
  new device.
• Your address is a short string / QR code that is safe to share openly.
• The envelope format is open and documented (secretkeeper.net).

ACCESS PROTECTION
• PIN code and biometrics (Face ID / Touch ID / fingerprint).
• Duress PIN: a separate code that opens an empty profile.
• Automatic wipe after several failed PIN attempts.
• Locks when the app goes to background; screenshot protection (can be
  turned off).

MESSAGING AND FILES
• Offline chats: per-contact message history, stored encrypted.
• Encrypt files of any type (.skf) — photos, videos, documents.
• Backup is a single encrypted file (.skb): its contents can only be
  opened with your seed phrase.

INTEGRATIONS
• Tetatet Chat: link the apps and secret messages get delivered online
  automatically.
• The Secret Keeper browser extension encrypts right on websites.
• Passwordless sign-in to services via QR (SK Login).

WHO IT IS FOR
Anyone who values privacy: personal correspondence, passwords and codes,
documents, medical and financial data. Secret Keeper requires no trust in
a middleman — verifiable cryptography instead of promises.

Open protocol specification: https://secretkeeper.net/protocol
Privacy policy: https://secretkeeper.net/privacy


## Version history (last 3 releases)

### safe added — 2026-09-25

• App log: About → Diagnostics now has an in-app log with level and label filters, search and sharing, so support can see what happened without extra tools. A switch next to it pauses logging at any time.
• Data requests: when you have only one record of the requested type, a "+" on the confirmation sheet lets you add a new one right there; the record picker has a "+" button too.
• Cleaner empty states: no search icon when there are no chats or the Vault is empty; on desktop the empty "Conversations" panel shows a single message across the whole pane.
• About: "Check for update" is a regular row again, and the beta toggle explains itself once when you switch it on instead of taking up a second line.

### 1.1.0 - tutorial added — 2026-09-10

• Interactive intro tour: addresses, encrypted envelopes and messenger integrations. Open it anytime from Settings or the + menu
• Attach photos and videos from the camera or gallery via the paperclip
• Clearer backups: guided flows for choosing where to keep your copy and for restoring it, with an unsaved changes badge in Settings
• Tap the changes badge to enable autosave or save a copy to the cloud
• Welcome screen now offers clear starting choices: I have a seed phrase or Create a new key
• Pair with Tetatet Chat right from the welcome screen
• About screen reorganized into sections with agreement links
• Clearer sign-in error messages and an easy way to contact support

### 1.0 — 2026-08-28

No release notes.

## More apps by PAYMASTER TECHNOLOGIES ELEKTRONIK PAZARLAMA DIS TICARET LIMITED SIRKETI

- [WhoTam](https://appshunter.io/ios/app/whotam/id6494986961)
- [Tetatet Chat](https://appshunter.io/ios/app/tetatet-chat/id6759101840)

All apps by PAYMASTER TECHNOLOGIES ELEKTRONIK PAZARLAMA DIS TICARET LIMITED SIRKETI: https://appshunter.io/developer/1740760883

---

*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-10-08.*